1. What is Throw Distance?

Throw distance is the distance between the projector lens and the screen. It's a crucial factor in determining the optimal placement of your projector for a given screen size.

2. How Does the Calculator Work?

The calculator uses the throw distance formula:

Where:

• \( Screen\ Width \) — Width of the projection screen (feet)
• \( Throw\ Ratio \) — Projector's throw ratio (dimensionless)

Explanation: The throw ratio is a specification provided by projector manufacturers that relates the screen width to the throw distance.

3. Importance of Throw Distance Calculation

Details: Proper throw distance calculation ensures your projector is positioned correctly to fill your screen without distortion or wasted space.

4. Using the Calculator

Tips: Enter screen width in feet and the projector's throw ratio (found in the projector's specifications). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical throw ratio?
A: Common throw ratios range from 0.5 (short throw) to 2.0 (long throw), with 1.2-1.5 being standard for most projectors.

Q2: Can I use inches instead of feet?
A: Yes, but be consistent - if you enter screen width in inches, the result will be in inches.

Q3: What if my projector has zoom?
A: Projectors with zoom will have a range of throw ratios (e.g., 1.2-1.5). Use the ratio that matches your desired zoom setting.

Q4: Does screen height affect throw distance?
A: No, throw distance is calculated based on screen width, though height is related to width by the screen's aspect ratio.

Q5: What about ultra-short throw projectors?
A: Ultra-short throw projectors (throw ratio < 0.4) require special calculations and placement considerations.